I'm thinking with blown sails it matters how the sail is blown. Where the draft is set and so many other things ... in addition to how the main is blown v the headsail. Sweet Pea's sails are shot. The main and 150 are about equally bad. I'm playing with more rake but it is like tuning a Yugo ... still bad and disappointing. The 110 working jib is OK-ish and sets better so I notice the difference when switching to that sail. When I reef the main the sail sets and drives the boat more cleanly. In general Sweet Pea's way past operational age sails have made the helm too neutral. Her performance is driving me nuts! :: Dave Scobie :: M17 #375 SWEET PEA - m17-375.com On Wed, Jun 20, 2018, 5:11 PM John Schinnerer <john@eco-living.net> wrote:
On Tue, Jun 19, 2018, 1:39 PM , <jerry@jerrymontgomery.org> wrote:
Jason- the 17 will sail far better with about 10 or 12" of rake- the exact amount depends on what kind of shape your main is in.
What is the correlation between rake and new vs. older sails, Jerry? In other words - a nice crisp brand new sail works best with more rake, or less rake? Older sails better with more rake, or less rake?
For those curious about angles that correspond to 10-12 inches, 10 inches aft of vertical at masthead is ~2.2 degrees. 12 inches is ~2.7 degrees.
I did angle calcs when getting my new stays. With turnbuckles at 50/50 fore and aft, I am at ~1.2 degrees aft rake (about 5.5 inches at masthead).
Handy trig tool (lots of these online): http://www.pagetutor.com/trigcalc/trig.html
cheers, John
-- John Schinnerer - M.A., Whole Systems Design -------------------------------------------- - Eco-Living - Whole Systems Design Services People - Place - Learning - Integration john@eco-living.net - 510.982.1334 http://eco-living.net http://sociocracyconsulting.com